Lockheed announces development of a MACH 6 capable successor to the SR-71

The SR-71 Blackbird has had an almost immeasurable effect on the world we live in today. Its record as the fastest aircraft ever to take to the skies speaks to the incredible engineering and problem solving employed by Lockheed Martin in the 1960s, and the reconnaissance missions it carried out over the Soviet Union and other potential enemies of the United States in the decades since have helped keep the U.S. one step ahead of potential threats, and 50,000 feet above commercial airliners.

Testing the SR-71 and its predecessor, the A-12 Oxcart, over Groom Lake, Nevada (also known in some circles as “Area 51”) added to the mystery surrounding the facility and likely contributed to reports of UFOs in the skies within 2,500 miles of the airstrip. Our love affair with this aircraft continues in pop-culture to this day, as even the X-Men seem to be flying a version of the SR-71 that allows for vertical takeoffs and landings in Fox’s movie series.

Black Bird Jet from X-Men First Class

Whether it’s because of the public’s love affair with the SR-71, or because of its near mythical performance and strategic benefit, Lockheed Martin isn’t ignoring the legend that is their Skunkworks’ crowning achievement. In an article produced for Aviation Week, Lockheed divulged some information about the long-awaited successor to the SR-71, appropriately dubbed, the SR-72.

Lockheed’s division for advanced aircraft development, commonly referred to as the Skunk Works, told Aviation Week that producing a formidable replacement for the SR-71, which was retired in 1998, has been delayed as they waited for hypersonic technologies to improve. Now, a new combined-cycle propulsion system that merges a supersonic jet engine with a rocket promises to offer the SR-72 performance that leaves its namesake in the proverbial dust. While the SR-71’s record setting top speed is said to have exceeded MACH 3 (approximately 2,300 miles per hour) the SR-72, equipped with two hybrid jet/rocket engines could potentially surpass MACH 6 – depending on the aircraft’s design being able to manage the friction created by air traveling over its control surfaces at such high speeds.

“We’ve been saying hypersonics is two years away for the last 20 years, but all I can say is the technology is mature and we, along with DARPA and the services, are working hard to get that capability into the hands of our warfighters as soon as possible,” Rob Weiss, Lockheed Martin’s executive vice president and general manager for Skunk Works, said.

Work on a hypersonic successor for the SR-71 began nearly twenty years ago, soon after the Blackbird finally retired from service. The U.S. Air Force announced work on a scaled demonstrator of the SR-72 in 2013, but since then the public has been in radio silence regarding the development of the air craft. The focus in recent years has been placed primarily on a different Lockheed project intended to give the U.S. and its allies air superiority in the wars of the future: the F-35.

Last week, Lockheed confirmed that ground tests have been conducted on the engine that will potentially power the next generation of world-changing long-distance aircraft. A combined-cycle engine that utilizes elements of ramjets and rocket engines has apparently been undergoing ground tests since the Air Force’s announcement in 2013. The engine is said to be the product of a partnership between Lockheed Martin and Aerojet Rocketdyne that was established in 2006.

Per the interview with Aviation Week, Lockheed’s Skunk Works is now rapidly approaching setting to work on a full-scale flight research vehicle (FRV) to test the potential of the new engine platform. The FRV, which is expected to be about the size of an F-22, could potentially be a piloted craft, but may also be an unmanned drone. Their current plans call for the FRV to begin flights as soon as the early 2020s, followed soon thereafter by a full size SR-72 demonstrator that will be equipped with two of the new, extremely powerful engines.

“Hypersonic aircraft, coupled with hypersonic missiles, could penetrate denied airspace and strike at nearly any location across a continent in less than an hour,” said Brad Leland, Lockheed Martin program manager, Hypersonics. “Speed is the next aviation advancement to counter emerging threats in the next several decades. The technology would be a game-changer in theater, similar to how stealth is changing the battlespace today.”

Little more has been announced about the SR-72, but if Lockheed’s timeline holds true, it could by flying high above our heads as early as the 2030s… but for now Lockheed is remaining tight-lipped about the performance expected out of the aircraft design, and if the SR-71 is any indicator, their secrecy will likely continue for some years to come.

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About the Author

About Alex Hollings

Alex Hollings writes on a breadth of subjects ranging from fitness to foreign policy, all presented through the lens of his experiences as a U.S. Marine, athlete and scholar. A football player, rugby player and fighter, Hollings has spent the better part of his adult life competing in some of the most physically demanding sports on the planet. Hollings possesses a master's degree in communications from Southern New Hampshire University, as well as a bachelor's degree in Corporate and Organizational Communications from Framingham State University.

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Bud

I would disagree about Ben not being accountable, I met him in the 80's back when production had ceased on the F117 at Burbank but was not yet announced to the public. Ben ran the F117 which was a CIA program and only handed over to the AF at the end of production. We had gone there for one thing or another and we spent alot of time with the ADP people. Ben was always under pressure and was constantly having to go from Burbank CA to DC for some meeting or another. He had big shoes to fill. Kelly who was still coming into the office once a month or so by then was even more awnry , the key was to be friends with his secretary, who later became his wife, she ran things.

tim e

Hopefully the technology will not end up on Wikileaks......

Chris H

This isn't the first manned vehicle to approach that speed. The X-1 I believe is purported to have gotten close to Mach 5 on a couple of flights.

Alan t

No pun intended lol

WayTooMuchGear

Kelly Johnson and Ben Rich were giants, but theirs was the era of self-accountability. Their reputation was all the accountability and you could take it to the bank. They'd finish the projects on time and actually give the government money back. Now we have entire departments dedicated to accountability, although I'm not sure how far they go in the black world. In the grey world, once we had a civilian Marine Corps bean counter wanting us to log toilet time in our timesheets. Shit you not.

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